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2. Standard deviation - Wikipedia

   en.wikipedia.org/wiki/Standard_deviation

   As explained above, while s 2 is an unbiased estimator for the population variance, s is still a biased estimator for the population standard deviation, though markedly less biased than the uncorrected sample standard deviation. This estimator is commonly used and generally known simply as the "sample standard deviation".

3. List of mathematical abbreviations - Wikipedia

   en.wikipedia.org/wiki/List_of_mathematical...

   Re – real part of a complex number. [2] (Also written.) resp – respectively. RHS – right-hand side of an equation. rk – rank. (Also written as rank.) RMS, rms – root mean square. rng – non-unital ring. rot – rotor of a vector field. (Also written as curl.) rowsp – row space of a matrix. RTP – required to prove.

4. Primary School Achievement Test (Malaysia) - Wikipedia

   en.wikipedia.org/wiki/Primary_School_Achievement...

   The mathematics examination is divided into two papers, paper 1 and paper 2. Starting from 2016, the exam is one hour long for each paper. Paper 1 is a multiple choice paper and consists of forty questions, all have a one-point score value. Paper 2 is the subjective area of Maths.

5. Worksheet - Wikipedia

   en.wikipedia.org/wiki/Worksheet

   The form comes with two worksheets, one to calculate exemptions, and another to calculate the effects of other income (second job, spouse's job). The bottom number in each worksheet is used to fill out two if the lines in the main W4 form. The main form is filed with the employer, and the worksheets are discarded or held by the employee.

6. New HIV prevention drug could reach poorest countries ... - AOL

   www.aol.com/hiv-prevention-drug-could-reach...

   A new long-acting preventive HIV drug could reach the world’s poorest countries by the end of 2025 or early 2026, a global health official told Reuters on Tuesday. The ambition is to start ...

7. Shoppers continue indulging in Black Friday sales, but ... - AOL

   www.aol.com/shoppers-continue-indulging-black...

   It estimated shoppers will spend a record $13.2 billion, up 6.1% year-over-year. Shopify, an e-commerce site, reported that it set a new record for its Black Friday sales, which reached $5 billion ...